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Prestressing is a technique of introducing stresses of a predetermined magnitude into a structural precast concrete product to improve its behavior.
Prestressed concrete is concrete that has had internal stresses introduced to counteract, to the degree desired, the tensile stresses that will be imposed in service. The stress is usually imposed by tendons of individual hard-drawn wires, cables of hard-drawn wires, or bars of high strength alloy steel.
Concrete in which reinforcing steel bars are stretched and anchored to compress it and thus increase its resistance to stress.
Method of overcoming concrete natual weakness in tension
structural elements are prestressed with propritry stressing methods to the required strength so that concrete can be utilised to optimum strength both in compression and tension.
a method for qualifying a concrete strenght.
It is a method of overcoming the natural weakness in concrete in tension by casting overlong beams
It used a high tensile strength steel cable (tendon) in slab and beam with long spans to get more economic system, and it divided into two type, the first one is pretension and the other post tension.
